GMAT Test Prep: DS-76382365 GMAT Data Sufficiency

Mary persuaded n friends to donate $500 each to her election campaign, and then each of these n friends persuaded n more people to donate $500 each to Mary’s campaign. If no one donated more than once and if there were no other donations, what was the value of n?

(1)The first n people donated 1/16 of the total amount donated.

(2)The total amount donated was $120,000.
Select one of the following answer choices